[Xen-devel] [PATCH 5 of 7] xenpaging: catch xc_mem_paging_resume errors

[Olaf Hering <olaf@xxxxxxxxx>]

# HG changeset patch
# User Olaf Hering <olaf@xxxxxxxxx>
# Date 1301591618 -7200
# Node ID bbf495e57371ae102d4e2fbb8ce1a5c54a7357c4
# Parent  8825c216096a80e5590ce075da273eeb06c1e7aa
xenpaging: catch xc_mem_paging_resume errors

In the unlikely event that xc_mem_paging_resume() fails, do not overwrite the
error with the return value from xc_evtchn_notify()

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

diff -r 8825c216096a -r bbf495e57371 tools/xenpaging/xenpaging.c
--- a/tools/xenpaging/xenpaging.c       Thu Mar 31 19:13:19 2011 +0200
+++ b/tools/xenpaging/xenpaging.c       Thu Mar 31 19:13:38 2011 +0200
@@ -405,8 +405,9 @@
     /* Tell Xen page is ready */
     ret = xc_mem_paging_resume(paging->xc_handle, paging->mem_event.domain_id,
                                rsp->gfn);
-    ret = xc_evtchn_notify(paging->mem_event.xce_handle,
-                           paging->mem_event.port);
+    if ( ret == 0 ) 
+        ret = xc_evtchn_notify(paging->mem_event.xce_handle,
+                               paging->mem_event.port);
 
  out:
     return ret;

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